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The role of male-male courtship in parasitic Hymenoptera is poorly known. A laboratory study was conducted to assess if  Psyttalia concolor  (Szépligeti) (Hymenoptera: Braconidae) male courtship can be affected by a previous experience in courting young conspecifics of both sexes. Two experiments were performed to evaluate the effect of experience in courting young wasps on both male courtship and male-male competition behavior. Results showed that a courting experience on both sexes can modify some sexual traits in a  P. concolor  male, without affecting its success in mating. When approaching virgin females, a  P. concolor  male that had a previous courtship experience with young wasps of either sex showed shorter latency times, more wing fanning, and longer courtship durations with respect to the control male. The hypothesis that a previous courting experience may allow a  P. concolor  male to refine its courtship behavior and to enhance courtship intensity in subsequent encounters with females was discussed.

Male-Male Sexual Behavior in the Parasitic WaspPsyttalia concolor